Which of the following is a polynomial?

A poly nomial is an expression with more than one term.

Step-by-step explanation:

Terms are separated by +'s and -'s. So, anything that has multiple terms and are polynomials(poly: the greek root for many.)

If an expression has a division, and the denominator(the number under) is a variable(x,y,z, etc.), then it is not a monomial. Thus it is a polynomial.

So to sort of answer your question if you're one of those people who just look to the bottom for answers to be lazy, I see 3 polynomials.

the linear relationship that represents a variation in direct proportion is the linear function that varies according to the numbers of its domain, for example the cost of producing x number of items can be represented in direct proportion by f (x) = mx + b, where m is the constant of proportionality, x the number of articles produced and b the fixed cost